基于可靠性与风险评估的煤炭码头关键设备维修决策研究

发布时间：2018-04-19 14:17

本文选题：煤炭码头 + 装卸设备　；参考：《武汉理工大学》2014年硕士论文

【摘要】：近年来，随着煤炭码头装卸设备不断向着大型化、自动化和高效化发展，装卸设备维修管理问题日益突出。煤炭码头设备种类多、组成复杂，故障随机性强、模式多样、对设备可靠性影响不一，从而导致设备的维修管理复杂化。基于可靠性理论及设备故障风险评估方法，本文对新兴的筒仓煤炭码头关键设备维修决策问题进行了深入研究，主要内容如下：首先，研究了筒仓煤炭码头设备组成和故障分析方法。对传统和筒仓煤炭码头装卸工艺进行分析，在筒仓煤炭码头关键设备工作原理基础上，详细分析了装船机、翻车机和皮带机的结构组成。基于故障模式及影响分析（Failure Modeand Effects Analysis，FMEA），结合筒仓煤炭码头设备特点，研究了筒仓煤炭码头关键设备FMEA分析方法及分析流程；第二，基于FMEA分析原理，对筒仓煤炭码头关键设备进行了可靠性分析。基于广泛收集的故障数据及关键设备的结构组成，对设备机构的功能和常见故障及影响进行分析，计算了设备的累积故障率，并对故障率指标进行评分；基于FMEA分析的基本原理、分析流程和设备的故障特点，对设备故障模式的严重程度和检测度进行综合评分，对装船机、翻车机和皮带机进行FMEA分析；第三，基于模糊理论和逼近理想解的排序方法，对装船机和翻车机故障模式进行了风险评估。建立了筒仓煤炭码头关键设备指标体系，应用模糊数和信息熵，对指标值进行了模糊化和加权处理，并基于逼近理想解决策方法，研究了综合评价指标，完成了装船机溜筒机构和翻车机翻车系统故障模式风险评估；最后，根据筒仓煤炭码头设备可靠性分析和风险评估结果，进行维修决策。基于以可靠性为中心（Reliability Centered Maintenance，RCM）的维修理论，建立了煤炭码头关键设备的RCM维修决策模型，并基于RCM逻辑决策流程，建立适用于煤炭码头设备维修方式决策标准，完成装船机溜筒机构和翻车机翻车系统的故障模式进行维修方式的决策。给出了常用的预防性维修周期确定方法，根据实际运营数据，对翻车机底梁开裂故障模式进行预防性维修周期计算。通过以上研究工作，提出了基于可靠性和风险评估的煤炭码头关键设备维修决策，为今后煤炭码头关键设备的维修决策提供了新思路。
[Abstract]:In recent years, with the development of large scale, automation and high efficiency of handling equipment in coal terminal, the maintenance and management problem of loading and unloading equipment is becoming more and more prominent.The equipment of coal wharf has many kinds, complex composition, strong randomness of fault, various modes, and different influence on the reliability of equipment, which leads to the complication of maintenance management of equipment.Based on reliability theory and equipment fault risk assessment method, this paper deeply studies the maintenance decision of key equipment in silo coal wharf. The main contents are as follows:Firstly, the equipment composition and fault analysis method of silo coal wharf are studied.The traditional and silo coal wharf loading and unloading technology are analyzed. On the basis of the working principle of the key equipment of the silo coal wharf, the structure composition of the loader, the dumper and the belt conveyor are analyzed in detail.Based on failure mode and impact analysis, this paper studies the FMEA analysis method and flow chart of key equipment of silo coal wharf based on failure Modeand Effects analysis and equipment characteristics of silo coal wharf.Secondly, based on the principle of FMEA, the reliability of the key equipment of silo coal wharf is analyzed.Based on the widely collected fault data and the structure composition of the key equipment, the functions of the equipment mechanism, common faults and their influences are analyzed, the cumulative failure rate of the equipment is calculated, and the failure rate index is graded.Based on the basic principle of FMEA analysis, the characteristics of flow and equipment fault are analyzed, the severity and detection degree of equipment fault mode are comprehensively graded, and the loading machine, overturning machine and belt belt machine are analyzed by FMEA.Thirdly, based on the fuzzy theory and the ranking method to approximate the ideal solution, the fault modes of loading and overturning are evaluated.The index system of the key equipment of silo coal wharf is established. The fuzzy number and information entropy are applied to the fuzzification and weighting of the index value. Based on the approach ideal solution decision method, the comprehensive evaluation index is studied.The risk assessment of the fault mode of the stowing mechanism and the overturning system of the ship loader is completed.Finally, according to the reliability analysis and risk assessment results of silo coal wharf equipment, maintenance decision is made.Based on the maintenance theory of reliability Centered (reliability Centered), a RCM maintenance decision model for key equipment of coal wharf is established. Based on RCM logic decision process, the decision standard for maintenance mode of coal wharf equipment is established.The failure mode of the loading machine and the turn-over system is made to make the decision of the maintenance mode.The commonly used preventive maintenance cycle determination method is given. According to the actual operation data, the preventive maintenance cycle is calculated for the cracking failure mode of the bottom beam of the dumper.Based on the above research work, this paper puts forward the maintenance decision of key equipment of coal wharf based on reliability and risk assessment, which provides a new idea for the maintenance decision of key equipment of coal wharf in the future.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U691.5

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